diff options
| author | Anup Patel <[email protected]> | 2019-08-12 11:50:22 +0530 |
|---|---|---|
| committer | Anup Patel <[email protected]> | 2019-08-13 09:48:40 +0530 |
| commit | a88e424f6c3a42a38e9395726d9fd4e50a96abd2 (patch) | |
| tree | 74804eabd44a8007c7a3a1ea62f710d68af53fbd /include | |
| parent | 2e0f3ac758da99fb6d1b4c651643999d83cd0a7f (diff) | |
lib: Handle traps when doing unpriv load/store in get_insn()
We can get a page/access trap when doing unpriv load/store in
get_insn() function because on a SMP system Linux swapper running
on HART A can unmap pages from page table used by HART B.
To tackle this we extend get_insn() implementation so that if
we get trap in get_insn() then we redirect it to S-mode as fetch
page/access fault.
Signed-off-by: Anup Patel <[email protected]>
Diffstat (limited to 'include')
| -rw-r--r-- | include/sbi/riscv_unpriv.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/sbi/riscv_unpriv.h b/include/sbi/riscv_unpriv.h index 0fad27d5..ebd0fe37 100644 --- a/include/sbi/riscv_unpriv.h +++ b/include/sbi/riscv_unpriv.h @@ -43,6 +43,7 @@ DECLARE_UNPRIVILEGED_LOAD_FUNCTION(u64) DECLARE_UNPRIVILEGED_STORE_FUNCTION(u64) DECLARE_UNPRIVILEGED_LOAD_FUNCTION(ulong) -ulong get_insn(ulong mepc, ulong *mstatus); +ulong get_insn(ulong mepc, struct sbi_scratch *scratch, + struct unpriv_trap *trap); #endif |